Lukin А. Е., and Sаmоylеnко I. I. “On Dispersed Native Metal Particles in Black Shales of the Euxinic Type – Megatraps of Natural Gas”. Reports of the National Academy of Sciences of Ukraine, no. 5 (February 3, 2025): 103–110. Accessed May 12, 2025. https://nasu-periodicals.org.ua/index.php/dp/article/view/14982.